This is 70!

Meet Cora Hill. She's 70-year-old and a track star. She was 55 years old when she was out walking her dog, when the dog took off running and she had to chase after him. She hasn't stopped running since, completing 18 marathons and 11 half marathons and works as a personal trainer. Last year we introduced you to another 70-year-old who looks like she's 40 or younger. She and Ms Cora have found their fountain of youth.